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Finding the Fourth Proportional to 136,381.88, 188,193.54 and 75,958.16

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Solution

The fourth proportional to 136,381.88, 188,193.54 and 75,958.16 is: 104,814.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,381.88 : 188,193.54 = 75,958.16 : x
  2. Step 2: Convert to fraction form
    136,381.88/188,193.54 = 75,958.16/x
  3. Step 3: Cross multiply
    136,381.88x = 188,193.54 × 75,958.16
  4. Step 4: Simplify right side
    136,381.88x = 14,294,835,022.29
  5. Step 5: Solve for x
    x = 14,294,835,022.29/136,381.88
  6. Step 6: Final answer
    x = 104,814.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.